2. 外语
  3. In order to stay warm during an extended period of time exposed to frigid weather a big heavy coat worn over normal clothing is

In order to stay warm during an extended period of time exposed to frigid weather a big heavy coat worn over normal clothing is

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问题 In order to stay warm during an extended period of time exposed to frigid weather a big heavy coat worn over normal clothing is not always the best method. If you are going to be spending a______period in the cold it is much better to dress in several lighter layers rather than in one heavy layer. By wearing layers the clothing acts______containment system for warmth. It takes body heat longer to escape layers than it does to escape one heavy layer. In addition, wearing a hat is recommended because most body heat is lost through the head and mittens are______to gloves.
选项 A、by
B、from
C、as
D、into
答案C
解析 词汇：介词1．这是一道词汇选择题，选项均为介词。2．原文意思是“穿很多层可以蓄积热量”，即有保温的效果，act as意为“有……的效果”，因此(C)为正确选项。
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